Dynamo-electric machine.



A. H. TIMMERMAN.

DYNAMO ELECTRIC MACHINE.

APPLIGATION FILED NOV.5,1906.

921,914. Patented May 18,1909

3 SHEETS-SHEET 1 W E8858: fM ENTOR A. H. Timmermau,

A. H. TIMMERMAN.

DYNAMO BLEGTRIB MAGRINE.

APPLICATION IILBD NOV. 5, 1900.

921 ,914. V Patented May 18, 1909.

I 3 BHEBT8BHBET 2. F |g.2.

WITNESSES: 35 5 INF/ENTUR f A. H Timmerman.

Q M a ATTORNEY v A. H. TIMMERMAN.

DYNAHO ELECTRIC MACHINE.

APPLICATIGN rum NOV. 5, 1906.

Patented May 18, 1909.

INVENTOR A. H. Timmerman.

ATTORNEY forming the cores for both. the

UNITED STATES PATENT OFEICE.

ARTHUR H. TIMMERMAN, OF ST. LOUIS, MISSOURI, ASSIGNOR TO WAGNER ELEOTRIG MANU- lGiC'lUItING COMPAN Y, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

DYNAMO-ELEOTRIG MACHINE.

Specification of Letters Patent.

Patented May is, 1909.

Application filed November 5, 1906. Serial No. 342,004.

To all whom it may concern:

Be it known that I, ARTHUR .[--I. TIMMER- MAN, a citizen of the United States, residing at the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Dynamo Electric Ma.- chines, of which the following is such a full, clear, and exact description as will enable any one skilled in the art to which it apper- 1U talus to make and use the same, reference beinghad to the accompanying drawings, forming part of this specification.

My invention relates to improvements in dynamo. electric machines and has for its object the provision of simple and reliable means for accurately centerin the laminae held or stator and the armature or rotor of such machines.

In the accompanying drawings which illustrate a dynamo electric machine made in accordance with my invention, Figure 1 is a side view artly in elevation and partly in section. Big. 2 is an enlarged section show-- ing the manner of securing the field core. Fig. 3 is a view similar to Fig. 2 but showing a slight modification. Fig. 4 is an enlarged sectional view showing the manner of securing the armature core. Fig. 5 is a section on the line 55 of Fig. 3. Fig. 6 is a View similar to F ig. 5 but showing a slight modification, and Fig. 7 is a view showing the manner of forming the laminae for the cores.

Like marks of reference refer to similar parts in the several viewsof the drawings.

While I have shown my invention as applied to the l/Vagner type of single phase alternating current motors, it will be understood that it may be applied to varioustypes of both direct and alternating current motors, as well as generators. 10 represents the main or'central part of the motor casing.

This part 10 is provided with a suitable base 11 and carries the field magnet, as will be hereinafter described. Each end of the central part 10 of the casing is finished as shown at 12 so as to receive the end caps 13. These end caps 13-are secured in position b means of bolts 14 and are provided with earings 15 in which is journaled the armature shaft 16.

Mounted on the shaft 16 is a commutator 17 and the slip rings 18, such as are usual in this type of motor. The shaft 16 also'has keyed to it a pair of end plates 19 between V casing is a narrow flange 31 also -which are secured the annular laminae 20 55 outer edges of the end plates 19 and the BE laminae 20 are annular members 26 having fingers projectin between the ndtches 24 so as to reinforce t e outer edges of the arms:- ture core. Projecting inwardly from the central part 10 of the casing, near one end 70 thereof, is a flange 28, best shown in Fig. 2. This flange 28 is provided with holes 29 forming bearings for bolts 30 for securing the field core in osition. These holes 29 are accurate] positioned with reference to the cen- 7 5 ter of t e part 10, this being accomplished by means of a suitable 'ig cooperating with the finished ends 12 of t e said art 10. At the opposite end of the centra part 10 of the inwardly from the casing. This flange 31 forms bearings against which the bolts 30 rest, the inner face of said flange bein accurately finished concentric with the finished end 12 of the central part 10 of the casing. 85

of the casing passes f The belt 30 at this en through 0 enings 32 in a clamping ring 33 and is hel in position by means of nuts 34,

35 are the annular laminae forming'thefield core. Each lamina 35 is outer periphery with notches 36 ads ted to engage the bolts 30 and thus center 1; e lamina. ,The laminae are clamped between a ridge 37 on the flange 28 and a ridge 38 on the clamping" rini rovld'ed wit notches 40; which, when the amines are assembled, form slots for the passage of the field windings 41. Between the flange 28 and the clamping ring 33 andthe laminae 30 are annular members 42 provided 1 with fingers rojecting between the slots 40 so as to rein orce the inner edge of the core. In Fig. 3 I have shown a slight modification in which the flange 28 at the left hand end of the central part 10 of the casingis dispensed I 5 with, and t e arrangement at the left hand end is a duplicate of that shown at the right hand and of the said part 10 of the casing.

plates firmly projecting provided .on its 33. The laminae 36; are also if? In Fig. 6 I have shown a further modification in which the flange 31 is replaced by a series of lugs 44 forming bearings against which the bolts 30 rest. These lugs 44 peiiorm the same function as the flange 41 r d inell'ect form an interrupted flange in lace of the solid flange; and I wish, therefore, when 1 use the term flange in claims, to be understood as including such an interrupted flange.

In forming the lamina 20 and 35 for the cores of my machine, the two are punched from a single sheet of metal at the same time, as illustrated in Fig. 7, the notches 21 and 36 and the slots 24 and 40 being formed at the same time. The two parts are tl'lG1'6IOlCCO]lcentric and the various laminae forming both cores will remain concentric if the notches 21 and 36 are maintained in line at the iroper distances f: 1111 the armature shaft. lhis is accom lished in the armature by means of the be ts 20 bein accurately spaced from the center of the dis s 19. In the field core the same result is accomplished bv means of the bolts 31, as the holes 29 and the bearing face of the flange 31 are accurately located with relation to the center of the machine. In assembling the laminae 35 of the field core, the bolts 30 are first passed through the holes 29, one of the nuts 34 being removed from each bolt. The laminae 35 can then be laced in position, as the arrangement of the flange 31 is such as to readily allow the passage of, the said laminae, as shown in Figs. 5 and 6. When the modification shown in Fig. 3 is used, the laminae may be inserted from either end of the part 10, while with that shown in Fig. 2 they can only be ins'erted from the right hand end. By tightening the nuts 34 the laminae are firmly clamped in position between the flange 28 and the clamping ring 33, or between the two clamping rings, as shown in Fig. 3. The bolts 30 thus clamp the laminae 35 in position and center them as well.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is

1. In a dynamo electric machine, the combination with a casing having finished ends, of inwardly projecting flanges integral with the casing and provided with bearings for transverse bolts ositioned with definite relation to said en s, bolts positioned by said bearings, field laminae bearing against and centered by said bolts, end caps secured to said finished ends, and a rotor supported by said end caps.

2. In a dynamo electric machine,- the combination with a casing having finished ends, of inwardly projecting flanges integral with said casing and provided with bearings for transverse bolts ositioned with definite relation to said en s, bolts positioned by said bearings, field laminae bearing against and c *tered by said bolts, a clamping ring for said lamina secured by said bolts, end caps secured to said finished ends, and a rotor supportcd by said end caps.

3. In a dynamo electric machine, the combination with a casing having an annular central part adapted to receive end rape, of an inwardly extending flange at each end of said central part and integral therewith, one of said flanges being arranged to allow the passage of the lamina, field lamina bearing against the other of said flanges, transverse bolts positioned by said flanges and centering said. laminae, a clamping ring for said laminae secured by said bolts, end caps seured to said central part, and a rotor supported by said end caps.

4. In a dynamo electric machine, the combination with a casing having an annular central part adapted to receive end caps, of an inwardly extending flange at each end of said central part and integral therewith, one of said flanges being arranged to allow the passage of the laminar, field laminae bearing against the other of said flanges, transverse bolts positioned by sail flanges and centering said laminae, a clamping ring for said lamina: secured. by said bolts and bearing against said first flange, end caps secured to said central'part, and a rotor supported by said end caps.

5. In a dynamo electric machine, the combination with a casing having an annular central part provided with finished ends to receive end caps, of an inwardly extending flange at each end of said central part integral therewith and provided with transverse bolt bearings positioned with definite relation to said finished ends, one of said flanges being arranged to allow the passage of the laminae, field lamina nearing against the other of said flanges, transverse bolts positioned by said flanges and centering said laminae, a clamping ring for said lamina: sccured by said bolts, end caps secured to said finished ends, and a rotor supported. by said end caps.

6. In a dynamo electric machine, the combination with a casing having an annular central part provided with finished ends to receive end caps, of an inwardly extending flange at each end of said central part integral therewith and provided with transverse bolt bearingspositioned with definite relation to said finished ends, one of said flanges being arranged to allow the passage of the laminae, field laminae bearing against the other of said flanges, transverse bolts positioned by said flanges and centering said laminae, a clamping ring for said laminae secured by said bolts and bearing against said first flange, end caps secured to said finished ends, and a rotor supported by said end caps.

7. In a dynamoelectric machine, the combination with a casing provided with a central part adapted to receive end caps, of an inwardly extending flange arranged at one end of said central part integral therewith and provided with holes forming bolt bearings, a second inwardly extending flange also integral with said central part and arranged to allow the passage of the laminae and situated at the'other end of said central part and forming bearings against which the bolts are ada tcd to rest, transverse bolts positioned y said bearings, annular laminae having notches in their peripheries engaging said bolts, and a clamping ring secured by said bolts and cor) crating with said first named flange to ho d said laminae, end caps secured to said central part, and a rotor supported by said end caps.

8. In a dynamo electric machine, the combination with. the central part of a casing, of end caps carried by said central part, a rotor shaft journaled in said end caps, an inwardly extending flange arranged at one end of said central art integral therewith and provided with -ho es forming bolt bearings, a second passage of t inwardly extending flange also integral with said central art and arranged to allow the iie laminae and situated at the other end of said central part and forming bearings against which the bolts are adapted to rest, transverse bolts positioned by said bearings, annular laminae having notches in their peripheries engaging said bolts, a clamping ring secured by said bolts and cooperating with said first-named flange to hold said lamina, end pieces carried by said rotor shaft, bolts carried by said end pieces,

and annular laminae the inner peripheries of which bear against said bolts, said end pieces being clamped against said laminae by said bolts.

In testimony whereof, I have-hereunto set my hand and affixed my seal in the presence of the two subscribing witnesses.

ARTHUR ll. TlllillllRMAN. 

